[monorepo] add integration for GitHub Code Spaces (#32722)

* [web] serve site manifest as application/json

* [monorepo] bail out early from dev-env-setup when inside devcontainer

* [monorepo] move utils for waiting for services into shared bash script

* [monorepo] move domain related env-vars into dedicated .env file

The .env file will be overridden in GitHub Code Spaces.

* [monorepo] remove unused initial_mongo_setup Make target

It was previously used for the mongo replica set setup.
That setup is a docker init script now.

* [monorepo] add flag for silencing docker build output

* [monorepo] add integration for GitHub Code Spaces

* [web] make prettier happy

* [web] restore no use-credentials for manifest outside code spaces

* [monorepo] run make install as part of post-start again

GitOrigin-RevId: 8c2cc3b969b7e3e8f9c5dac778192c9412cbf4df

services/web/scripts/e2e_test_setup.mjs

@@ -85,7 +85,7 @@ async function deleteUser(email) {
   await UserDeleter.promises.expireDeletedUser(user._id)
 }
 
-async function createProjectWithOldHistoryId(userId) {
+export async function createProjectWithOldHistoryId(userId) {
   const projectName = 'old history id'
   const historyId = parseInt(
     await HistoryManager.promises.initializeProject(),
@@ -137,7 +137,7 @@ async function purgeNewUsers() {
   )
 }
 
-async function provisionSplitTests() {
+export async function provisionSplitTests() {
   const backup = Path.join(
     MONOREPO,
     'backup',
@@ -213,12 +213,7 @@ async function main() {
   await Promise.all([purgeNewUsers(), provisionUsers(), provisionSplitTests()])
 }
 
-await main()
-await GracefulShutdown.gracefulShutdown(
-  {
-    close(cb) {
-      cb()
-    },
-  },
-  'SIGTERM'
-)
+if (import.meta.main) {
+  await main()
+  await GracefulShutdown.gracefulShutdown()
+}